Description

Dimethylsiloxane, Methyl Vinyl Acetate-Terminated is a specialized reactive silicone fluid featuring terminal vinyl acetate groups, which provide unique crosslinking and adhesion properties. This functionalized siloxane is crucial for formulators seeking to enhance the compatibility, flexibility, and durability of polymer systems. It is primarily utilized in the production of advanced silicone rubbers, pressure-sensitive adhesives, and as a reactive modifier in coatings and sealants for the electronics, automotive, and construction industries.

Application

• As a key reactive intermediate in the synthesis of high-performance addition-cure silicone elastomers and rubbers.
• As a crosslinking agent or chain extender in the formulation of pressure-sensitive adhesives (PSAs) and sealants.
• As a reactive plasticizer and modifier to improve the flexibility and adhesion of coatings for electronic components.
• In the manufacture of release coatings and liners, where its reactive nature allows for tailored surface properties.
• As a compatibilizer and processing aid in polymer blends, particularly where silicone integration is required.
• For research and development of novel silicone-based copolymers and hybrid materials.

Basic Information

Product Name	Dimethylsiloxane, Methyl Vinyl Acetate-Terminated
CAS No.	68083-17-0
Molecular Formula	Contact for details
Molecular Weight	Varies by grade (typically 500-10,000 g/mol)
Synonyms	Vinyl Acetate-Terminated Polydimethylsiloxane; Vinyl Acetoxy-Terminated PDMS; Methyl Vinyl Acetate-Terminated Dimethyl Siloxane; Siloxane, dimethyl, methyl vinyl acetate-terminated; Reactive Silicone Fluid VA; PDMS-VA; Acetoxyvinyl-functional Siloxane; Silicone intermediate 68083-17-0
EINECS	Contact for details

Quality Control

Our Dimethylsiloxane, Methyl Vinyl Acetate-Terminated is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including determination of vinyl acetate content, viscosity, and purity, to ensure consistent performance and reliability for your formulations. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and organic solvents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to prevent moisture absorption and maintain reactivity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Vinyl Acetate Content	As per grade requirement
Viscosity (25°C)	Grade-dependent (cSt)
Specific Gravity (25°C)	0.95 - 1.05
Refractive Index (25°C)	1.400 - 1.410
Volatile Content	< 1.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.